• Title/Summary/Keyword: Operation & Maintenance

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A Study on the Concept of a Ship Predictive Maintenance Model Reflection Ship Operation Characteristics (선박 운항 특성을 반영한 선박 예지 정비 모델 개념 제안)

  • Youn, Ik-Hyun;Park, Jinkyu;Oh, Jungmo
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.27 no.1
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    • pp.53-59
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    • 2021
  • The marine transport industry generally applies new technologies later than other transport industries, such as airways and railways. Vessels require efficient operation, and their performance and lifespan depend on the level of maintenance and management. Many studies have shown that corrective maintenance (CM) and time-based maintenance (TBM) have restrictions with respect to enabling efficient maintenance of workload and cost to improve operational efficiency. Predictive maintenance (PdM) is an advanced technology that allows monitoring the condition and performance of a target machine to predict its time of failure and helps maintain the key machinery in optimal working conditions at all times. This study presents the development of a marine predictive maintenance (MPdM; maritime predictive maintenance) method based on applying PdM to the marine environment. The MPdM scheme is designed by considering the special environment of the marine transport industry and the extreme marine conditions. Further, results of the study elaborates upon the concept of MPdM and its necessity to advancing marine transportation in the future.

Development of a Simulation System for Reliability Centered Maintenance (신뢰성 기반 정비를 위한 시뮬레이션 시스템 개발)

  • Yun, Won-Young;Son, Sung-Min;Kim, Jong-Woon
    • IE interfaces
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    • v.13 no.3
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    • pp.521-527
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    • 2000
  • A simulation model is developed for planning maintenance, and it can be used in the procedure of Reliability-Centered Maintenance. System availability and the total cost of system operation are predicted by discrete event simulation. These two kinds of output are useful to determine the interval of preventive maintenance. This paper describes simulation logic, and focuses on modeling the maintenance effects and the relations of maintenance works. An example is described for illustrating the simulation model.

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A study on maintenance equipments automatic state and implication for Metro EMU (도시철도 전동차량 유지보수 설비 자동화 실태와 시사점에 관한 연구)

  • Lee, Duk-Gyu;Lee, Hi-Sung
    • Proceedings of the KSR Conference
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    • 2008.11b
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    • pp.561-566
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    • 2008
  • The EMU of maintenance technique or system is changing on a large scale. To subway operation beginning the breakdown was born and every that time after the fact repaired. But, recently before the breakdown of the subway occurs, repairs in advance with the preventive maintenance concept which was exchanged. However, the preventive maintenance is to readjust, cleaning, tighten and the oil the repetition by the worker simple experience. This study on introduces the EMU of maintenance method which applies a automatic inspection equipment from the study contributing which develops the preventive maintenance system.

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BrDSS: A decision support system for bridge maintenance planning employing bridge information modeling

  • Nili, Mohammad Hosein;Zahraie, Banafsheh;Taghaddos, Hosein
    • Smart Structures and Systems
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    • v.26 no.4
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    • pp.533-544
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    • 2020
  • Effective bridge maintenance reduces bridge operation costs and extends its service life. The possibility of storing bridge life-cycle data in a 3D parametric model of the bridge through Bridge Information Modeling (BrIM) provides new opportunities to enhance current practices of bridge maintenance management. This study develops a Decision Support System (DSS), namely BrDSS, which employs BrIM and an efficient optimization model for bridge maintenance planning. The BrIM model in BrDSS extracts basic data of elements required for the optimization process and visualizes the inspection data and the optimization results to the user to help in decision makings. In the optimization module of the DSS, the specifically formulated Genetic Algorithm (GA) eliminates the chances of producing infeasible solutions for faster convergence. The practicality of the presented DSS was explored by utilizing the DSS in the maintenance planning of a bridge under operation in the southwest of Iran.

A study on the safety improvement and productivity's increase through continuous preventive maintenance (지속적 계획보전을 통한 생산성 향상 및 안전개선에 대한 연구)

  • Yang Doo Jin;Lee Chang Ho
    • Journal of the Korea Safety Management & Science
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    • v.7 no.1
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    • pp.101-115
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    • 2005
  • This study deals with the procedure of safety improvement, productivity increase ,and tact-time reduction through setting up the system about preventive maintenance. Actually, it is hard to establish and carry out preventive maintenance, even though we recognize the importance of the system concerning time, cost, labor, and so forth. In this study in the viewpoint of cost we are for achieving maximum efficiency by change and reduction of planning process adapted to the special work group. At first we briefly will mention the kind ,the necessity ,and the concept of preventive maintenance ,and then divide the equipment used in the assembly line into the two whether it is necessary or not by way of estimating the breakdown loss ,comparing with general establishment of preventive maintenance and modifying it to the case. At the second step we will establish the operation system of plan management related to production and quality in the special case. Check period and category will be set by dividing the assembly equipment into LCL and Focus in the third step. The forth step will contain the operation procedure in detail. And then we must make check and repair record periodically. Finally, on the basis of the record the selection of checking of significance will be conducted. This results in safety improvement, tact time reduction, and productivity improvement.

A study on the safety improvement and productivity's increase through continuous preventive maintenance. (지속적 계획보전을 통한 생산성 향상 및 안전개선에 대한 연구)

  • YANG DOOJIN;LEE CHANGHO
    • Proceedings of the Safety Management and Science Conference
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    • 2004.11a
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    • pp.131-141
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    • 2004
  • This study deals with the procedure of safety improvement, productivity increase, and tact-time reduction through setting up the system about preventive maintenance. Actually, it is hard to establish and carry out preventive maintenance, even though we recognize the importance of the system concerning time, cost, labor, and so forth. In this study in the viewpoint of cost we are for achieving maximum efficiency by change and reduction of planning process adapted to the special work group. At first we briefly will mention the kind, the necessity, and the concept of preventive maintenance, and then divide the equipment used in the assembly line into the two whether it is necessary or not by way of estimating the breakdown loss, comparing with general establishment of preventive maintenance and modifying it to the case. At the second step we will establish the operation system of plan management related to production and quality in the special case. Check period and category will be set by dividing the assembly equipment into LCL and Focus in the third step. The forth step will contain the operation procedure in detail. And then we must make check and repair record periodically. Finally, on the basis of the record the selection of checking of significance will be conducted. This results in safety improvement, tact time reduction, and productivity improvement.

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A Study on Maintenance Actual Condition and Revitalization of Rural Development Project (일반농산어촌개발사업 완료지구 시설물 실태분석 및 활성화 방안 연구)

  • Choi, Young-Wan;Kim, Keun-Ho;Eun, Hee-Chang;Lee, Young-Kyu;Kim, Young-Joo
    • Journal of Korean Society of Rural Planning
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    • v.22 no.2
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    • pp.1-8
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    • 2016
  • This study is intended to prepare an revitalization plan of region where rural development project is completed through an analysis of the actual condition of facility operation and maintenance in the region where the project is completed. The results of survey of actual condition of facility operation in the region where rural development project was completed showed that the facilities were not self-sufficient in terms of operation and maintenance cost. Therefore, a prerequisite to the revitalization of region where the project is completed is to prepare an alternative plan for increasing the efficiency and applicability of currently already prepared facilities. Second, a project operation organization system should be streamlined and the competency of operation personnel should continue to be strengthened. Third, it is necessary to prepare a support system and establish cooperation networks for increasing the extensibility of project and continuing to induce community revitalization in the region where the project is completed in the future.

A Study on the Development of the Decision Support Model Investment for the in the Operation and Maintenance in Telecommunications (운용보전 투자결정 지원모델의 개발)

  • Park, Sun-Dal;Yang, Byeong-Hak;Sim, Hyeon-Taek;Jeong, Ho-Yeon;Jo, Yeong-Hyeon;Kim, Tae-Ho
    • IE interfaces
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    • v.3 no.1
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    • pp.1-11
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    • 1990
  • The purpose of this study is to develop the decision support model for the investment in the operation and maintenance in telecommunication networks. First, we analyze the relation between the cost of quality and the quality of service, and then establish and analysis tool of the investment alternatives for the improvement of the quality of service. This study will offer a decision tool to enhance an efficiency of the operation and maintenance for telecommunication facilities, and will contribute to shaping a policy of network performance management.

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Applications of Agent-Based Modeling (ABM) in Enhancing Facility Operation and Management

  • Khodabandelu, Ali;Park, JeeWoong
    • International conference on construction engineering and project management
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    • 2022.06a
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    • pp.393-400
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    • 2022
  • Agent-based modeling (ABM), as a relatively new simulation technique, has recently gained in popularity in the civil engineering domain due to its uniquely advantageous features. Among many civil engineering applications, ABM has been applied to facility operation and management, such as energy consumption management, as well as the enhancement of maintenance and repair processes. The former studies used ABM to manage energy consumption through simulating human energy-related behaviors and their interactions with facilities, as well as electrical, heating, and cooling systems and appliances, while the latter used ABM to enhance maintenance process through facilitating coordination, negotiation, and decision making between facility managers, service providers, and repair workers. The present study aims to provide a short qualitative review on the most recent applications of ABM in the above-mentioned areas. Based on the review and follow-up analysis, the study identifies the advantages, disadvantages, and limitations of ABM applications to facility operation and management, and offers several potential future research topics in the hope of filling the existing literature gaps.

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